Combination handwheel and faceplate for lathes



. A. S. KURKJIAN. COMBINATION HANDWHEEL AND FACEPLATE FOB LATHES. APPLICATION FVILED JULY 24, 19m.

1,399,969, Patented Dec. 13, 1921.

'Llzi/enigl firms/7 8. A u/A j/an attorneys" UNITED STATES PATENT OFFICE.

ARMEN S. KURKJIAN, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR J30 OLIVER MACHINERY COMPANY, OF GRAND RAPIDS, MICHIGAN, A CORPORATIONDF MICHIGAN.

COMBINATION HAN DWI-IEEL AND FACEPLATE FOR LATHES.

Specification of Letters Patent.

Application filed Jnly 24,

To all tnhom it may concern:

Be it known that I, ARMEN S. KURKJIAN,

a citizen of the United States of America,

residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Combination Handwheels and Faceplates for Lathes; and I do hereby declarethe following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a combined hand wheel and face plate for lathes, being particularly of value in conjunction with wood turning lathes. Heretofore it has been common practice to equip wood turning lathes with hand wheels at the head thereof, by means of which the operator of the lathe could manually control the work, within certain limits, or apply his hand as a brake against said hand wheel when it is desired to quickly bring the work to a stop after the driving power is shut off. It has also been the practice heretofore to make this hand wheel detachable so that a face plate on which work may be attached can be applied in its place for use in turning larger work than can be carried between the head and the tailstock of the machine. cessitates two separate members, one the hand wheel, and the other the face plate, only one of which at a time can be attached to the machine. In my invention, the two devices, viz., the hand wheel and the face plate, are combined in one, being useful for either purpose without the necessity of manufacturing and machining two separate and distinct parts.

For an understanding of the invention, its construction and the method of application, reference may be had to the accompanying drawing, in which Figure 1 is an elevation of the combined hand wheel and face plate.

Fig. 2 is a vertical section therethrough, and

Fig. 3 is a perspective view, showing the application of the combined hand wheel and face plate to a motor-driven wood turning lathe.

Like reference characters refer to like parts in the different views of the drawing.

A wood turning lathe is illustrated at 1,

This ne- 1918. Serial No. Manse. H equipped with an electric, driving motor 2 stock 3' between which, and 'a face Jplate' l,

attached to the motor shaft, wood'of a size freely rotatable above the bed o f the planer, maybe secured for turning. in the usual manner. At the opposite end of themotor shaft, the combined handwheel and face plate of my invention is adapted to be dea-s y s c r Th combined hand wheel and face plate includes a web 5 hav ing a plain outer face 6 against which large work may be secured, a central threaded boss 7 for detachable connection to the shaft of the motor, and an outer annular heavy rim 8, having a circular contour with which the face 6 of the wheel is tangent, the surface of the rim 8 curving away from this plate and around until it meets the inner face of the web 5, as shown in Figs. 1 and 2. A plurality of openings '9 are made through the web -5 for the passage of screws which may be inserted into the work when it is attached to the combined hand wheel and face plate.

A structure of this character combines all the functions of the separate hand wheel and face plate used heretofore with wood turning lathes. When work is held between the face plate 4 and the tailstock 3, this member is of utility as a hand wheel for manually moving the work, if desired, and against which the hand of the operator may be applied as a brake, as previously noted. If large work is to be turned, the combined hand wheel and face plate may be detached from the motor shaft and screws inserted through the openings 9 to secure the work firmly against the outer flat face 6, after which the same may be again attached to the motor shaft. Large work having a radius too great to go above the bed of the lathe is'frequently held on a face plate at the outer end of the motor shaft and turned in such position. Any suitable rest for the turning chisels may be used beyond the end of the lathe. By reason of the" enlarged outer rim 8, sufficientweight is had for fly wheel purposes and a dished recess is made on the inner face of this combined hand wheel and face plate for the entrance of the fingers of the operator when using the device as a hand wheel. It is evident that Patented Dec. 13,

at the head thereof, and with the usual tailshaft from either end of the threaded opening through the boss 7. By it, not only is one member made to serve the functions of the two used heretofore, but with it there is no likelihood of loss or misplacement of a part not in use, this being particularly valuable in manual training schools where a large number of wood turning lathes of different sizes are used, with a resultant confusion and, many times, loss of either hand wheels or face plates when the same are not attached to the lathe.

The invention, while of simple character, is'one of great merit.

I claim:

1. A combined hand wheel and face plate for lathes, comprising a central boss, a web extending therefrom, having a fiat outer face against which work to be turned on the lathe may be secured and an outer annular heavy rim of curved outline, the surface of said rim joining with and curving away from said fiat outer face of the hand wheel and face plate, substantially as de-- scribed.

2. A combined hand wheel and face plate for lathes, comprising a central interiorly threaded boss, a web extending therefrom having a flat outer face against which work to be turned on the lathe may be secured, and an outer annular heavy rim of curved outline and substantially circular in cross section, the surface of said rim forming a continuation of said outer flat surface and curving away therefrom and thence downwardly and back to join with the inner surface of the web, said rim having a larger diameter than the thickness of the web, substantially as described.

In testimony whereof I aflix my signature.

ARMEN S. KURKJIAN. 

